Homework Answers
here,
by using conservation ofenergy,
P.E_car-(W_friction)=U_P.E
m*g*h-(u*mg*s)=1/2*k*x^2
450*9.8*30-(0.8*450*15)=1/2*4400*x^2
=====>
compression x=7.595 m .......is answer
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